Ignoring a field with script that checks for blank field

liquinas · February 25, 2007

Hello. I have here a standard form with some additional code to check that fields are not left blank. However, fields $L1 through $L20 I want those fields to be allowed to be left blank. Anything I could do to exclude these fields from being required?

<?php
$lol = $_GET['lol'];
?>
<?php
$user="liquinas";
$host="localhost";
$password="roflmao";
$database = "tlcmotors";
$connection = mysql_connect($host,$user,$password)
	or die ("An error occured while accessing the database. Please contact [email protected]");
$carinfo = getcarinfo("$lol");
?>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Super Duper Database Management System 2k7</title>
</head>

<body>
<?php
$user="liquinas";
$host="localhost";
$password="roflmao";
$database = "tlcmotors";
$connection = mysql_connect($host,$user,$password)
	or die ("An error occured while accessing the database. Please contact [email protected]");
$carinfo = getcarinfo("$lol");
$DB = mysql_select_db($database,$connection)
	or die ("Error selecting database. Please contact [email protected]");

	/* check information from the form */
	/* set up array of field labels */
	$label_array = array ( "List_title" => "List_title",
							"Short_title" => "Short_title",
							"VIN" => "VIN",
							"ID" => "ID",
							"Engine" => "Display_engine",
							"Transmission" => "Transmission",
							"Color" => "Color",
							"Miles" => "Miles",
							"Display_miles" => "Display_miles",
							"Style" => "Style",
							"Make" => "Make",
							"Price" => "Price",
							"Display_price" => "Display_price",
							"Year" => "Year");
foreach ($HTTP_POST_VARS as $key => $value)
{
/* check each field for blank fields */
if ($value == "")
{
	$blank_array[$key] = "blank";
	}
	elseif ( ereg("(name)",$key) )                //if key includes "name"
	{
		if (!ereg("^[A-Za-z' -]{1,50}$",$HTTP_POST_VARS[$key]) )
		{
			$bad_format[$key] = "bad";
			}
			}
			}
			/* If any fields were not okay, display error message and form */
		if (@sizeof($blank_array) > 0 or @sizeof($badformat) > 0)
		{
			if (@sizeof($blank_array) > 0)
			{
				/* Display message for missing information */
				echo "<b>You didn't fill in one or more required fields. You must enter:</b><br>";
				/* Display listing of missing information */
				foreach($blank_array as $key => $value)
				{
					echo "   {$label_array[$key]}<br>";
					}
					}
				if (@sizeof($bad_format) > 0)
				{
					/* Display message for bad information */
				echo "<b>One or more fields have information that appear to be incorrect. This means it has an incorrect format (i.e. inserting comas or symbols on a text-only field). Please correct the format for the following fields:</b><br>";
				/* Display list of incorrect information */
				foreach($bad_format as $key => $value)
				{
				echo "    {label_array[$key]}<br>";
				}
				}
				/* REDISPLAY THE FORM */

echo "FORM GOES HERE";

exit();
}
else       //if data is okay
{
$query = "INSERT INTO Cars (ID,List_title,Short_title,VIN,Year,Make,Engine,Display_engine,Transmission,Color,Miles,Display_miles,Style,Price,Display_price,L1,L2,L3,L4,L5,L6,L7,L8,L9,L10,L11,L12,L13,L14,L15,L16,L17,L18,L19,L20,Pic_1,Pic_2,Pic_3,Pic_4,Thumb_1,Thumb_2,Thumb_3,Thumb_4) VALUES('$ID','$List_title','$Short_title','$VIN','$Year','$Make','$Engine','$Display_engine','$Transmission','$Color','$Miles','$Display_miles','$Style','$Price','$Display_price','$L1','$L2','$L3','$L4','$L5','$L6','$L7','$L8','$L9','$L10','$L11','$L12','$L13','$L14','$L15','$L16','$L17','$L18','$L19','$L20','$Pic_1','$Pic_2','$Pic_3','$Pic_4','$Thumb_1','$Thumb_2','$Thumb_3','$Thumb_4')";
$result = mysql_query($query)
or die ("Problem with Query. Contact [email protected]");
echo "Database has been updated<br>";
}

?>
</body>
</html>
<?php
function getcarinfo($ID)
{
$db = mysql_select_db("tlcmotors")
or die ("Error-Could not select database. Please contact [email protected]");
$query = "SELECT * FROM cars WHERE ID='$ID'";
$result = mysql_query($query)
or die ("Error-Could not execute query. Please contact [email protected]");
return mysql_fetch_array($result,MYSQL_ASSOC);
}
?>

liquinas · February 25, 2007

bump

superuser2 · February 25, 2007

I haven't tested this but try:

<?php
$allowed_fields = array();

$i = 1;
while($i < 20)
{
     $i++;
     $allowed_fields[] = 'L' . $i;
}

if($value == "" && !in_array($key, $allowed_fileds))
{

The if() should not run if the value is L1 through L20. Once again, I didn't test this, but try it and let us know what happens.

btherl · February 25, 2007

Looks fine to me except for the incrementing.. that'll give you L2 -> L20. Just start with $i = 0 and that will fix it. You can also use either

foreach (range(1,20) as $i) {
  $allowed_fields[] = 'L' . $i;
}

or a C style for loop:

for ($i = 1; $i <= 20; $i++) {
  $allowed_fields[] = 'L' . $i;
}

superuser2 · February 25, 2007

Yeah, correction on mine, full code:

<?php
$allowed_fields = array();

$i = 0;
while($i < 20)
{
     $i++;
     $allowed_fields[] = 'L' . $i;
}

if($value == "" && !in_array($key, $allowed_fileds))
{

Thanks for catching that, btherl

liquinas · February 26, 2007

Sorry for my noobness, how do I implement that with my code?

superuser2 · February 26, 2007

<?php
$lol = $_GET['lol'];
?>
<?php
$user="liquinas";
$host="localhost";
$password="roflmao";
$database = "tlcmotors";
$connection = mysql_connect($host,$user,$password)
	or die ("An error occured while accessing the database. Please contact [email protected]");
$carinfo = getcarinfo("$lol");
?>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Super Duper Database Management System 2k7</title>
</head>

<body>
<?php
$user="liquinas";
$host="localhost";
$password="roflmao";
$database = "tlcmotors";
$connection = mysql_connect($host,$user,$password)
	or die ("An error occured while accessing the database. Please contact [email protected]");
$carinfo = getcarinfo("$lol");
$DB = mysql_select_db($database,$connection)
	or die ("Error selecting database. Please contact [email protected]");

	/* check information from the form */
	/* set up array of field labels */
	$label_array = array ( "List_title" => "List_title",
							"Short_title" => "Short_title",
							"VIN" => "VIN",
							"ID" => "ID",
							"Engine" => "Display_engine",
							"Transmission" => "Transmission",
							"Color" => "Color",
							"Miles" => "Miles",
							"Display_miles" => "Display_miles",
							"Style" => "Style",
							"Make" => "Make",
							"Price" => "Price",
							"Display_price" => "Display_price",
							"Year" => "Year");
$allowed_fields = array();

$i = 0;
while($i < 20)
{
     $i++;
     $allowed_fields[] = 'L' . $i;
}

foreach ($HTTP_POST_VARS as $key => $value)
{
/* check each field for blank fields */
if ($value == "" && !in_array($key, $allowed_fileds))
{
	$blank_array[$key] = "blank";
	}
	elseif ( ereg("(name)",$key) )                //if key includes "name"
	{
		if (!ereg("^[A-Za-z' -]{1,50}$",$HTTP_POST_VARS[$key]) )
		{
			$bad_format[$key] = "bad";
			}
			}
			}
			/* If any fields were not okay, display error message and form */
		if (@sizeof($blank_array) > 0 or @sizeof($badformat) > 0)
		{
			if (@sizeof($blank_array) > 0)
			{
				/* Display message for missing information */
				echo "<b>You didn't fill in one or more required fields. You must enter:</b><br>";
				/* Display listing of missing information */
				foreach($blank_array as $key => $value)
				{
					echo "   {$label_array[$key]}<br>";
					}
					}
				if (@sizeof($bad_format) > 0)
				{
					/* Display message for bad information */
				echo "<b>One or more fields have information that appear to be incorrect. This means it has an incorrect format (i.e. inserting comas or symbols on a text-only field). Please correct the format for the following fields:</b><br>";
				/* Display list of incorrect information */
				foreach($bad_format as $key => $value)
				{
				echo "    {label_array[$key]}<br>";
				}
				}
				/* REDISPLAY THE FORM */

echo "FORM GOES HERE";

exit();
}
else       //if data is okay
{
$query = "INSERT INTO Cars (ID,List_title,Short_title,VIN,Year,Make,Engine,Display_engine,Transmission,Color,Miles,Display_miles,Style,Price,Display_price,L1,L2,L3,L4,L5,L6,L7,L8,L9,L10,L11,L12,L13,L14,L15,L16,L17,L18,L19,L20,Pic_1,Pic_2,Pic_3,Pic_4,Thumb_1,Thumb_2,Thumb_3,Thumb_4) VALUES('$ID','$List_title','$Short_title','$VIN','$Year','$Make','$Engine','$Display_engine','$Transmission','$Color','$Miles','$Display_miles','$Style','$Price','$Display_price','$L1','$L2','$L3','$L4','$L5','$L6','$L7','$L8','$L9','$L10','$L11','$L12','$L13','$L14','$L15','$L16','$L17','$L18','$L19','$L20','$Pic_1','$Pic_2','$Pic_3','$Pic_4','$Thumb_1','$Thumb_2','$Thumb_3','$Thumb_4')";
$result = mysql_query($query)
or die ("Problem with Query. Contact [email protected]");
echo "Database has been updated<br>";
}

?>
</body>
</html>
<?php
function getcarinfo($ID)
{
$db = mysql_select_db("tlcmotors")
or die ("Error-Could not select database. Please contact [email protected]");
$query = "SELECT * FROM cars WHERE ID='$ID'";
$result = mysql_query($query)
or die ("Error-Could not execute query. Please contact [email protected]");
return mysql_fetch_array($result,MYSQL_ASSOC);
}
?>

Try that. If it doesn't work, please let me know.

liquinas · February 26, 2007

That results in

Warning: in_array(): Wrong datatype for second argument in c:\apache\htdocs\projects\tlc_motors\process.php on line 83

line 83 is

	if ($value == "" && !in_array($key, $allowed_fileds))

liquinas · February 26, 2007

I am willing to send up to 3 cookies to whoever helps me fix this today

liquinas · February 26, 2007

I have also tried setting the default value for the text fields to but this only works when using the form to insert a new record. When using the update form, it shows up as "" again because the default value for the text field comes from the database and it prints it as empty rather than the actual code.

Any other solution to this prob would be greatly appreciated, I'm totally stuck and in deep sh** if I can't get this working.

Thanks.

superuser2 · February 27, 2007

Right before the foreach do die(print_r($allowed_fields)); and tell me what that outputs.

liquinas · February 27, 2007

Array ( [0] => L1 [1] => L2 [2] => L3 [3] => L4 [4] => L5 [5] => L6 [6] => L7 [7] => L8 [8] => L9 [9] => L10 [10] => L11 [11] => L12 [12] => L13 [13] => L14 [14] => L15 [15] => L16 [16] => L17 [17] => L18 [18] => L19 [19] => L20 ) 1

the 1 at the end is correct

liquinas · February 27, 2007

superuser2 · February 27, 2007

Sorry spelling error:

if ($value == "" && !in_array($key, $allowed_fileds))

should be

if ($value == "" && !in_array($key, $allowed_fields))

Try it again, that should work. Sorry, I just spelled fields wrong.

superuser2 · February 27, 2007

and by the way when you do that take out the die(print_r thing.

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Ignoring a field with script that checks for blank field

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